61421331430 has 16 divisors (see below), whose sum is σ = 112208523120. Its totient is φ = 24201837792.

The previous prime is 61421331421. The next prime is 61421331443. The reversal of 61421331430 is 3413312416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45836145 + ... + 45837484.

It is an arithmetic number, because the mean of its divisors is an integer number (7013032695).

Almost surely, 2^61421331430 is an apocalyptic number.

61421331430 is a deficient number, since it is larger than the sum of its proper divisors (50787191690).

61421331430 is a wasteful number, since it uses less digits than its factorization.

61421331430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91673703.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 61421331430 its reverse (3413312416), we get a palindrome (64834643846).

The spelling of 61421331430 in words is "sixty-one billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred thirty".